package dlwntk6545;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;

public class J03_MemberDAO implements J03_IMemberDAO{
	
	private String DRV = "oracle.jdbc.driver.OracleDriver";
	private String URL = "jdbc:oracle:thin:dlwntk6545/dlwntk6545@112.216.253.125:1521:xe";
	private String insertSQL = "insert into J03MEMBER values(exam.nextval, ?, ?, ?, ?, sysdate)";
	private String selectSQL = "select * from J03Member order by mno desc";
	private String updateSQL = "update J03Member set passwd = ?, name = ?, email = ?, where mno = ?";
	private String deleteSQL = "delete J03Member where mno = ?";
	
	@Override
	public boolean insertMember(J03_MemberVO m) {
		Connection conn = null;
		PreparedStatement pstmt = null;
		boolean result = false;
		
		try{
			//Class.forName(DRV);
			//conn = DriverManager.getConnection(URL);
			conn = this.openDatabase();
			pstmt = conn.prepareStatement(insertSQL);
			//? 매개변수에 대입할 값 지정
			pstmt.setString(1, m.getUserid());
			pstmt.setString(2, m.getPasswd());
			pstmt.setString(3, m.getName());
			pstmt.setString(4, m.getEmail());
			pstmt.executeUpdate();
			result = true;
		}catch(Exception ex){
			ex.printStackTrace();
		}finally{
			this.closeDatabase( pstmt, null, conn);
		}
		
		return result;
	}	//insertMember 괄호
	
	
	//JDBC Connection 객체를 생성하는 메서드
	private Connection openDatabase(){
		
		try{
		Class.forName(DRV);
		return DriverManager.getConnection(URL);
		}catch(Exception ex){
			ex.printStackTrace();
		}
		return null;
				
	}
	
	//JDBC 객체를 닫는 메서드
	private void closeDatabase(PreparedStatement p, ResultSet r, Connection c){
		if(r != null){
			try{r.close(); r = null;}
				catch(Exception e){}}
		if(p != null){
			try{p.close(); p = null;}
			catch(Exception e){}}
		if(c != null){
			try{c.close(); c = null;}
			catch(Exception e){}}
	}


	
	//select 문으로 전체 회원정보를 조회한 후 MemberVO 를 내용으로 갖는 동적배열 List 로 결과를 넘김
	@Override
	public List<J03_MemberVO> selectMember() {
		
		Connection conn = null;
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		List<J03_MemberVO> result = new ArrayList<>();
		
		try{
			conn = openDatabase();
			pstmt = conn.prepareStatement(selectSQL);
			rs = pstmt.executeQuery();
			while(rs.next()){
				J03_MemberVO m = new J03_MemberVO();
				m.setMno(rs.getString("mno"));
				m.setUserid(rs.getString("userid"));
				m.setPasswd(rs.getString("passwd"));
				m.setName(rs.getString("name"));
				m.setEmail(rs.getString("email"));
				m.setRegdate(rs.getString("regdate"));
				
				result.add(m);
			}
		}catch(Exception ex){
			ex.printStackTrace();
		}finally{
			closeDatabase(pstmt, rs, conn);
		}
		
		return result;
	}
	
	
	
	@Override
	public boolean updateMember(J03_MemberVO m) {
		
		Connection conn = null;
		PreparedStatement pstmt = null;
		
		boolean result = false;
		
		try{
			conn = openDatabase();
			pstmt = conn.prepareStatement(updateSQL);
				pstmt.setString(1, m.getPasswd());
				pstmt.setString(2, m.getName());
				pstmt.setString(3, m.getEmail());
				pstmt.setString(4, m.getMno());
			
			int cnt = pstmt.executeUpdate();
			if(cnt == 0)System.out.println("명령은 잘 실행됐지만, 수정된 데이터 없음");
			result = true;
		}catch (Exception ex) {
			ex.printStackTrace();
		}finally{
			closeDatabase(pstmt, null, conn);
		}
		
		return result;
	}
	
	
	
	@Override
	public boolean deleteMember(J03_MemberVO m) {
		
		Connection conn = null;
		PreparedStatement pstmt = null;
		
		boolean result = false;
		
		try{
			conn = openDatabase();
			pstmt = conn.prepareStatement(deleteSQL);
				pstmt.setString(1, m.getMno());
			
			result = true;
		}catch (Exception ex) {
			ex.printStackTrace();
		}finally{
			closeDatabase(pstmt, null, conn);
		}
		
		return result;
	}
	
}
